It's saying that it doesn't like something about your email configuration.
Either the user name, password or pop3 server name/IP address is incorrect.
I would suggest reviewing all of these items. Or wipe out the existing email profile, and recreate it.

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You will need to check your email settings in your email client on your PC. In Outlook Express, under "tools" ->'accounts, choose your mail and select the "Properties" button. Check that your POP3 Server is set to the POP3 server of your Internet Provider. eg mail.yourisp.com. The port is 110. Make sure your user name and password are both correct. The mail server will (when set corectly) access its mail server and deliver your email. Of course you must already be connected to the Internet.

Under “Incoming mail (POP3)”, check the box next to “This server
requires a secure connection (SSL)". The port number in the “Incoming
mail (POP3)" field should automatically change from 110 to 995. If it
doesn’t, make sure the port number is set to 995.

You are receiving this error because of one of two reasons:
1) Your email account is not set up properly. Click on Microsoft Outlook, click on Tools, then Accounts. You will see a window with columns stating Account-Type-Connection. If an account is set up then click on it then click on Properties. Click server tab and you will see the SMTP server block and the POP3 server block. Both of these fields will read as follows: pop.XXXXX.net and smtp.XXXXX.net. Your Internet Service Providers name will be in the XXXX. If these are not set up properly then you cannot connect to send email. If they are filled out correctly then you need to call your Internet Service Provider and inform them of your situation. Their server is not working properly.

Under “Incoming mail (POP3)”, check the box next to “This server requires a secure connection (SSL)". The port number in the “Incoming mail (POP3)" field should automatically change from 110 to 995. If it doesn’t, make sure the port number is set to 995.